Product features
Best stitches in 360° for Car Seats, Bags and Air Bags JUKI is launching the "AMS-251" its high-end 1-needle CNC sewing machine provided with a machine-head-turning mechanism. The new model guarantees high-quality seams uniformly in every sewing direction.
The machine-head-turning mechanism helps achieve high-quality seams uniformly in every sewing direction
JUKl's unique synchronization technology controls the machine head, hook and feed mechanism, thereby creating the most favorable seams. In case of continuous circumference sewing, the sewing machine constantly detects the direction of sewing. As a result, consistent-quality seams are produced regardless of the direction of sewing.

With its sewing area of "1,000 mm × 600 mm" the AMS-251 is best suited to the sewing of decorative stitches and large-size products
The sewing machine is ideally suited to the sewing of decorative stitches on car seats, luxury bags and school bags, but also to the sewing of large-sized products with zero design tolerance for irregular stitches. In addition, the sewing machine can be used for sewing two or more pieces of small products at a time.

Perforation Camera System (optional)
Thanks to JUKl's original image recognition technology, this sewing machine enables sewing of hard-to-sew perforated materials as desired and produces beautifully-finished seams.

Basic performance
Machine head turning Slip ring system*1
Slip ring system has been adopted to the new machine-head turning mechanism. As a result, limitless turning of the machine head is enabled to allow the sewing machine to sew complicated patterns continuously.
*1 Rotating connector that is able to transmit power and electric signals from the stationary body to the rotating body

Machine head turning Cutting point needle
The cutting point needle can be used regardless of the sewing direction since the sewing machine constantly faces the sewing direction at its front.

Machine head lifting function
Since thick materials, clamps, palettes with protrusions can be used, design will be expanded.

Multi-axis control technology
The multi-axis control technology used by JUKI are applied to simultaneously control six axes*2.
*2 Machine-head turning, Hook turning, Main shaft, Hook driving shaft (hook), X-axis feed, Y-axis feed

Horizontal-axis, 3 fold-capacity rotary hook
Adoption of the 3 fold-capacity hook helps reduce the frequency of bobbin replacement even when thick thread is used, thereby supporting sewing of large products.

Operation
The IP420 for the existing AMS Series models has been adopted for the new AMS model. In addition, the existing sewing pattern input software "PM1" is also applicable.

Safety cover
Opening and closing sensor is mounted to the turning-head cover and turning-hook cover to prevent the machine from starting when the cover(s) is opened and to automatically stop the machine if the cover(s) is opened while the machine is in operation.

Start button
A 2-handed start button has been adopted for safe, accurate start up. In addition, unintentional start up of the machine is prevented.

Bobbin replacement cove
Bobbin can be changed easily by opening the accessible cover without requiring the operator to reach under the machine to change the bobbin.

Specifications
*"sti/min" stands for "Stitches per Minute"
| Model name | AMS-251 | AMS-251 |
|---|---|---|
| Application | Medium - Heavy | Medium - Heavy |
| Sewing Area | 1,000 mm × 600 mm | 1,000 mm × 600 mm |
| Max Sewing Speed | 2,500 sti/min* (for stitch length of 3 mm or less) | 2,500 sti/min* (for stitch length of 3 mm or less) |
| Needle (at the time of delivery) | DP x17, #18 - 25 (#23) | DP x17, #18 - 25 (#23) |
| Thread | Nm 60/3 - 20/3 | Nm 60/3 - 20/3 |
| Hook | Rotary Hook, Horizontal - Axis, 3 fold - capacity | Rotary Hook, Horizontal - Axis, 3 fold - capacity |
| Head Liftable | 50 mm | 50 mm |
| Storage of pattern data | Main-body memory: Max. 33,000,000 stitches, 999 patterns (max. 50,000 stitches/ pattern) | Main-body memory: Max. 33,000,000 stitches, 999 patterns (max. 50,000 stitches/ pattern) |
| Storage of pattern data | External Max. 50,000,000 stitches, 999 patterns (max. 50,000 stitches/ pattern) | External Max. 50,000,000 stitches, 999 patterns (max. 50,000 stitches/ pattern) |
| Total weight | 950 kg | 950 kg |
| Dimensions | 2,400 mm (W) × 1,800 mm (D) × 1,600 mm (H) | 2,400 mm (W) × 1,800 mm (D) × 1,600 mm (H) |
Videos
Catalogue
The AMS-251 documents Juki publishes, on their own site. They open in a new tab.
And the catalogues Juki publishes for their whole range.
Apparel General Catalog (PDF)Non-apparel General Catalog (PDF)Essential Parts List
The file is published and updated by the manufacturer; it is not copied here, so nobody downloads an outdated version.
Data sheets, photos, videos and specifications: Juki.
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